<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>Login</title>
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/css/bootstrap.min.css" rel="stylesheet">
    <style>
        * {
            padding: 0;
            margin: 0;
        }
        .container {
            width: 40%;
            margin: 90px auto;
        }
        .bottom {
            position: absolute;
            bottom: 15px;
            width: 100%;
            text-align: center;
        }
    </style>
</head>
<body>
<!--头部-->
<header>
    <div class="page-header">
        <h2>登录 <small>效果展示</small></h2>
    </div>
</header>
<!--内容区域-->
<section class="container">
    <div class="row">
        <div class="col-md-12">
            <form action="" method="post">
                <div class="form-group">
                    <label for="user">User：</label>
                    <input type="text" class="form-control" id="user" name="user">
                </div>
                <div class="form-group">
                    <label for="password">Password：</label>
                    <input type="password" class="form-control" id="password" name="password">
                </div>
                <button type="submit" class="btn btn-primary">提交</button>
            </form>
        </div>
    </div>
</section>
<!--底部-->
<footer class="bottom">
    <span><small>Copyright &copy; 2019 By Akashi_Sai</small></span>
</footer>
<script src="https://cdn.jsdelivr.net/npm/jquery@1.12.4/dist/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@3.3.7/dist/js/bootstrap.min.js"></script>
</body>
</html>